Herbert MK3 it is. Just chatted today with Eric Steckel and he is using the MK3, mostly the third channel. I think his tone is glorious. He is setting the volume fairly high (between 4 and 7 depending on the venue), but I think I can get it up to 4 in my studio room without getting the police called.

It's not as dense and thick in the mid range compared to the MK2 and it's tighter. It's also considerably more dynamic.

"Well, that's not true.", too Mr. (or Mrs. or Miss). Rationalizations can be a bitch, sometimes. To each their own.

I've played both the MK2 and MK3 ad nauseum through all V30 RL V30 Diezel cabs. ME Don't know where you come up with this theory about having thicker mids, and or being tighter (whatever that means) + being "considerably more dynamic". We playing the same Electronic Arts video game?

If you're at all familiar with crossover distortion and setting the bias current on a Diezel amp (either in millivolts or milliamps) particularly a Diezel Herbert, then you know that Herbert sounds more compressed if you set the bias too high and then you will lose some of what you're calling dynamics. For a little more headroom and more balanced dynamics set the bias at ~60 mA. Don't believe me? Experiment with a bias current progressing through 50 to 80 mA with each pair of KT77s, 1&6,2&5,3&4. If you've got good tuned ears then the difference in tone, feel and articulation will be obvious to you.

I've only had my MK1 since 2003 (16 years), one of the original Herbert's hand crafted by Papa. I have both, my MK1 & MK2 together now and they love each other, unconditionally. The only slight difference between the two is that the schematics are a bit different. I found the MK2 to be "considerably" clearer on CHNL1 than MK3's CHNL1 and in my opinion the MK1 takes the overall prize. The MK1 is the master in my stereo Herbert rig to my MK2 slave.

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